Question

ajuda urgente pfv!!!!!!!! sendo r//s//t usando o teorema de tales calcule o valor de x

Answer 1

Explicação passo-a-passo:

a)

$\sf \dfrac{x}{6}=\dfrac{4}{8}$

$\sf 8x=6\cdot4$

$\sf 8x=24$

$\sf x=\dfrac{24}{8}$

$\sf x=3$

b)

$\sf \dfrac{x}{20}=\dfrac{5}{15}$

$\sf 15x=20\cdot5$

$\sf 15x=100$

$\sf x=\dfrac{100}{15}$

$\sf x=\dfrac{20}{3}$

c)

$\sf \dfrac{4x+1}{x+2}=\dfrac{16}{18}$

$\sf 18\cdot(4x+1)=16\cdot(x+2)$

$\sf 72x+18=16x+32$

$\sf 72x-16x=32-18$

$\sf 56x=14$

$\sf x=\dfrac{14}{56}$

$\sf x=\dfrac{1}{4}$